Standard transformer laminations:
:
click on header of any column in table below to sort by that column
| Pattern | Fig | A | B | C | D | E | F | G | Hole dia |
|---|---|---|---|---|---|---|---|---|---|
| 13L | 7 | 25.4 | 28.575 | 6.35 | 6.35 | 0 | |||
| 31L | 7 | 19.05 | 28.575 | 6.35 | 6.35 | 0 | |||
| 50L | 7 | 47.625 | 59.5376 | 12.7 | 12.7 | 39.624 | |||
| 101L | 7 | 25.4 | 63.5 | 12.7 | 12.7 | 3.3528 | |||
| 103LM | 7 | 38.1 | 62.6872 | 12.7 | 12.7 | 4.0894 | |||
| 141L | 7 | 19.05 | 41.275 | 6.35 | 6.35 | 3.175 | |||
| 188L | 7 | 19.05 | 30.1752 | 4.7752 | 4.7752 | ||||
| 750L | 7 | 19.05 | 74.6252 | 10.3124 | 11.1252 | 257.175 | |||
| 1DU | 1 | 22.225 | 63.5 | 6.35 | 9.525 | 6.35 | 12.7 | ||
| 18DU | 1 | 15.875 | 34.925 | 4.7752 | 6.35 | 9.525 | |||
| 37DU | 1 | 38.1 | 76.2 | 9.525 | 19.05 | 19.05 | 3.6576 | ||
| 50DU | 1 | 50.8 | 101.6 | 12.7 | 25.4 | 12.7 | 25.4 | 4.7752 | |
| 124DU | 1 | 11.1252 | 24.5872 | 3.175 | 4.7752 | 6.35 | |||
| 250U | 1 | 22.225 | 20.6248 | 6.35 | 9.525 | 6.35 | |||
| 23E | 3 | 25.4 | 15.875 | 3.175 | 6.35 | 6.35 | 3.175 | ||
| 25E | 3 | 25.4 | 12.7 | 3.175 | 6.35 | 6.35 | 3.175 | ||
| 27E | 3 | 31.75 | 17.4752 | 4.7752 | 6.35 | 9.525 | 4.7752 | ||
| 2425EE | 2 | 25.4 | 12.7 | 3.175 | 6.35 | 6.35 | 3.175 | 6.35 | |
| 2627EE | 2 | 31.75 | 17.4752 | 4.7752 | 6.35 | 9.525 | 4.7752 | 9.525 | |
| 2638EE | 2 | 31.75 | 13.208 | 4.7752 | 6.35 | 9.525 | 4.7752 | 9.525 | |
| 2738EE | 2 | 31.75 | 17.4752 | 4.7752 | 6.35 | 9.525 | 4.7752 | 13.208 | |
| 2829EE | 2 | 12.7 | 7.9248 | 1.5748 | 3.175 | 3.175 | 1.5748 | 3.175 | |
| 3031EE | 2 | 9.525 | 5.5372 | 1.1938 | 2.3622 | 2.3622 | 1.1938 | 3.9624 | |
| 3233EE | 2 | 14.732 | 6.858 | 1.778 | 3.81 | 3.556 | 1.778 | 3.683 | |
| 186-187EE | 2 | 19.05 | 13.4874 | 2.3622 | 4.7752 | 4.7752 | 2.3622 | 8.7376 | |
| 186-188EE | 2 | 19.05 | 18.2626 | 2.3622 | 4.7752 | 4.7752 | 2.3622 | 8.7376 | |
| 187-188EE | 2 | 19.05 | 18.2626 | 2.3622 | 4.7752 | 4.7752 | 2.3622 | 13.4874 | |
| 7EI | 6 | 79.375 | 82.55 | 12.7 | 15.875 | 22.225 | 12.7 | 3.9624 | |
| 21EI | 6 | 41.275 | 26.9748 | 6.35 | 7.9248 | 12.7 | 6.35 | 3.175 | |
| 25EI | 6 | 25.4 | 12.7 | 3.175 | 6.35 | 6.35 | 3.175 | ||
| 25HEI | 6 | 25.4 | 15.875 | 3.175 | 6.35 | 6.35 | 3.175 | 1.5748 | |
| 27EI | 6 | 31.75 | 17.4752 | 4.7752 | 6.35 | 9.525 | 4.7752 | ||
| 50EI | 6 | 38.1 | 25.4 | 6.35 | 6.35 | 12.7 | 6.35 | 3.175 | |
| 75EI | 6 | 57.15 | 38.1 | 9.525 | 9.525 | 19.05 | 9.525 | 3.3528 | |
| 75HSEI | 6 | 57.15 | 38.1 | 9.525 | 9.525 | 19.05 | 9.525 | 2.3622 | |
| 87EI | 6 | 66.675 | 44.45 | 11.1252 | 11.1252 | 22.225 | 11.1252 | 4.7498 | |
| 094EI | 6 | 9.525 | 5.1562 | 1.1938 | 2.3622 | 2.3622 | 1.1938 | ||
| 100EI | 6 | 76.2 | 50.8 | 12.7 | 12.7 | 25.4 | 12.7 | 5.5372 | |
| 125EI | 6 | 95.25 | 63.5 | 15.875 | 15.875 | 31.75 | 15.875 | 5.5372 | |
| 186EI | 6 | 19.05 | 8.7376 | 2.3622 | 4.7752 | 4.7752 | 2.3622 | ||
| 187E | 3 | 19.05 | 13.4874 | 2.3622 | 4.7752 | 4.7752 | 2.3622 | ||
| 187EI | 6 | 19.05 | 13.4874 | 2.3622 | 4.7752 | 4.7752 | 2.3622 | ||
| 188E | 6 | 19.05 | 18.2626 | 2.3622 | 4.7752 | 4.7752 | 2.3622 | ||
| 188EI | 6 | 19.05 | 18.2626 | 2.3622 | 4.7752 | 4.7752 | 2.3622 | ||
| 375EI | 6 | 34.925 | 23.8252 | 4.7752 | 7.9248 | 9.525 | 4.7752 | 1.9812 | |
| 625EI | 6 | 47.625 | 31.75 | 7.9248 | 7.9248 | 7.9248 | 15.875 | 3.175 | |
| 10LE | 2 | 47.625 | 46.0502 | 7.9248 | 7.9248 | 15.875 | 7.9248 | ||
| 63LE | 3 | 63.5 | 39.6748 | 7.9248 | 15.875 | 15.875 | 7.9248 | ||
| 185LE | 3 | 19.05 | 13.4874 | 2.3622 | 4.7752 | 4.7752 | 2.3622 | ||
| 187LE | 3 | 19.05 | 15.875 | 2.3876 | 4.7752 | 4.7752 | 2.3876 | ||
| 195LE | 3 | 19.812 | 27.3812 | 2.4892 | 4.953 | 4.953 | 4.953 | ||
| 2425LE | 3 | 25.4 | 19.05 | 3.175 | 6.35 | 6.35 | 3.175 | ||
| 2627LE | 3 | 31.75 | 26.9748 | 4.7752 | 6.35 | 9.525 | 4.7752 | ||
| 3333LE | 3 | 15.24 | 10.8712 | 1.905 | 3.81 | 3.81 | 1.905 | ||
| 31UI | 5 | 23.8252 | 31.75 | 7.9248 | 7.9248 | 7.9248 | |||
| 50UI | 5 | 38.1 | 50.8 | 12.7 | 12.7 | 12.7 | 3.9624 | ||
| 375UI | 5 | 28.575 | 38.1 | 9.525 | 9.525 | 9.525 | |||
| 375HUI | 5 | 28.575 | 38.1 | 9.525 | 9.525 | 9.525 | 3.175 | ||
| 12F | 8 | 30.1752 | 23.4188 | 4.3688 | 6.35 | 8.7376 | 4.3688 | 5.1308 | |
| 20F | 4 | 32.0802 | 38.1 | 4.7752 | 8.89 | 9.525 | 4.7752 | 13.462 | 2.3622 |
| 219F | 8 | 22.225 | 11.5062 | 2.7686 | 5.5626 | 5.5626 | 2.7686 | ||
| 21FB | 8 | 41.275 | 26.9748 | 6.35 | 7.9248 | 12.7 | 6.35 | ||
| 50FG | 8 | 0 | 34.4424 | 6.35 | 7.9248 | 12.7 | 6.35 | 10.5664 | |
| 51FB | 4 | 30.1752 | 23.4188 | 4.3688 | 6.35 | 8.7376 | 4.3688 | 9.652 | |
| 094F | 8 | 9.525 | 5.207 | 1.1938 | 2.3622 | 2.3622 | 1.1938 | 0.7874 | |
| 2425FG | 4 | 22.225 | 19.05 | 3.175 | 6.35 | 6.35 | 3.175 | 6.35 | |
| 2829FB | 4 | 12.7 | 9.525 | 1.5748 | 3.175 | 3.175 | 1.5748 | ||
| 249I | 9 | 6.35 | 61.1124 | 0 | 0 | 0 | 0 | 3.6576 | |
Available Materials:
High permeability and low distortion 80% nickel alloy, 49% nickel alloy, and cobalt iron
Material thickness of 0.35 mm, 0.20 mm or 0.15 mm